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Job Purpose Engineer, Reservoir Engineering Support plays a critical role in safeguarding and unlocking the full production potential of PTTEP’s Thai onshore assets. The position delivers high ‑ quality reservoir engineering insights to drive field development decisions, proactive reservoir management, and well operations excellence. The role is essential to optimizing production, safeguarding reserves integrity, and implementing value ‑ adding solutions that help mitigate natural decline and support long ‑ term production sustainability in mature fields. Key Accountabilities Provide reservoir engineering input to field development plans, ensuring alignment with Asset Planning and cross-functional teams. Manage, update and maintain reserves and reservoir ‑ related datasets with high accuracy, including reserves estimation, periodic reserves reporting (monthly/quarterly/annual), and resources maturation. Plan and monitor reservoir management activities, including production diagnostics, performance evaluation, and subsurface/well issue identification for mature oil and gas fields. Propose, coordinate, and monitor well and drilling operations and data acquisition programs (e.g., formation pressure test program, well intervention, workover, surveillance) to optimize production, extend well life, and enhance subsurface understanding. Plan, execute, and oversee reservoir engineering activities such as well testing, well performance evaluation, decline analysis, and development well proposals to support production enhancement. Apply knowledge of production optimization concepts to improve well performance, maximize recovery and support continuous improvements in field performance. Professional Knowledge & Experiences Bachelor's or higher in Petroleum/Reservoir Engineering, or related discipline. 3+ years of experience in Petroleum Engineering, Reservoir Engineering, or related subsurface functions. Experience in work process optimization and digitalization, including improving subsurface workflows, integrating data-driven tools, and enhancing efficiency in reservoir engineering processes Good in both written and spoken English. Good project management capability, including planning, prioritization, and cross‑functional coordination. Good computer literacy with broad understanding of engineering and analytical software/tools.
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.